(57) Technical field: analysis of mixtures, predominantly of biologic origin, for the contents of biological and/or chemical components, and analysis of mixtures, which parameters determine vital functions of biologic objects.
Entity: spatially arranging a chosen component attached to magnetic particles, exposing the particles to a magnetic field, and recording a magnetic induction signal, from which the content of the analyte in the mixture is judged; this includes grouping the chosen component in a probe volume, making the magnetic field alternating, pre-setting its spectrum, at least, at one frequency, and recording the signal at a frequency, which is a multiple of this frequency, during the exposure of the magnetic particles to the field.
Technical result consists in the increase of signal-to-noise ratio and, hence, increase of the accuracy of measurements, sensitivity enhancement, improvement of the reliability of the data obtained, and, at the same time, lowering analysis costs owing to the reduction of the number of operations needed, time, amount and dimensions of the apparatus needed, and, besides, the development of mobile inexpensive mass test laboratories, improvement of operational flexibility of the method and the apparatus, and the extension of their application area.